Better to stay-out-of-it
You know that a conversation falls under the better-to-stay-out-of-it category: if you get a smile for an answer if you get a "well... may be.. may be not " for an answer if you get a quiet stern look that asks "Why do you want to know?" if you sense a quick change of topic if you get an indirect " as much as you.. or not as big as people think it is" answer I have noticed that people are not comfortable talking about Money, Property, Weight, Age among other things.... And once people who take these topics seriously get into this kind of a conversation, it is just never the same between them.... Wonder Why??!!!??? Courtesy : yesterday's road side conversation when A was keen on knowing how much B got for a hike, and he drilled him very casually ( hard to notice if you didn't know the context) and found out exactly the amount he got for a hike... :)